MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
I just fixed the cut files by adjusting the section cut a bit, adding back the supports, and scaling up so the stl is in mm. Let me know if these files are still non-manifold. I reuploaded the files under the same names.